Piston made of aluminum cast alloy and method of manufacturing the same
AssigneeKabushiki Kaisha Toyota Chuo Kenkyusho
InventorsHajime Ikuno, Yoshihiko Sugimoto, Hiroshi Hohjo
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Abstract
A piston made of aluminum cast alloy having a main body section in an approximately cylindrical shape, atop face section provided and arranged so as to occlude one end of the main body section, and a pin boss section in which a pin hole is provided so as to penetrate through the main body section in a radial direction. The piston comprises an aluminum cast alloy containing Mg (Magnesium): equal to or less than 0.2 mass %, Ti (Titanium) 0.05-0.3 mass %, Si (Silicon): 10-21 mass %, Cu (Copper): 2-3.5 mass %, Fe (Iron): 0.1-0.7 mass %, Ni (Nickel): 1-3 mass %, P (Phosphorus): 0.001-0.02 mass %, Al (Aluminum): the remaining portions, and impurities.
Claims9
A piston made of an aluminum cast alloy,
- wherein the aluminum cast alloy has a hypereutectic structure and comprises:
- Mg (Magnesium):
- 0.2-2 mass %,
- Ti (Titanium):
- 0.15-0.3 mass %,
- Si (Silicon):
- 10-21 mass %,
- Cu (Copper):
- 2-3.5 mass %,
- Fe (Iron):
- 0.1-0.7 mass %,
- Ni (Nickel):
- 1-3 mass %,
- P (Phosphorus):
- 0.001-0.02 mass %,
- V (Vanadium):
- 0.02-0.3 mass %,
- Zr (Zirconium):
- 0.02-0.3 mass %,
- Mn (Manganese):
- 0.2-0.7 mass %,
- Ca (Calcium):
- 0.0005-0.003 mass %,
- Al (Aluminum):
- the remaining portions, and impurities, and
- wherein pre-use Vickers hardness (Vickers hardness prior to the initiation of use) of the piston is in the range from HV 70 to 100.
A piston made of an aluminum cast alloy,
- wherein the aluminum cast alloy has a hypereutectic structure and comprises:
- Mg (Magnesium):
- 0.2-2 mass %,
- Ti (Titanium):
- 0.15-0.3 mass %,
- Si (Silicon):
- 10-21 mass %,
- Cu (Copper):
- 2-3.5 mass %,
- Fe (Iron):
- 0.1-0.7 mass %,
- Ni (Nickel):
- 1-3 mass %,
- P (Phosphorus):
- 0.001-0.02 mass %,
- V (Vanadium):
- 0.02-0.3 mass %,
- Zr (Zirconium):
- 0.02-0.3 mass %,
- Mn (Manganese):
- 0.2-0.7 mass %,
- Ca (Calcium):
- 0.0005-0.003 mass %,
- Al (Aluminum):
- the remaining portions, and impurities.
Dependencies are inferred from the claim text.